Prefabricated joint toy

ABSTRACT

The present disclosure relates to a prefabricated joint toy. An intermediate ring portion of a second toy block is inserted into a fitting gap of a first toy block, so that the intermediate ring portion of the second toy block is arranged between a first coupling ring and a second coupling ring of the first toy block. Ring protrusions respectively formed on upper and lower sides of the intermediate ring portion are respectively inserted into the first coupling ring and the second coupling ring of the first toy block.

CROSS-REFERENCE TO RELATED APPLICATION

The present application is a continuation of International Patent Application No. PCT/KR2022/016518, filed on Oct. 27, 2022, which is based upon and claims the benefit of priority to Korean Patent Application No. 10-2022-0072776 filed on Jun. 15, 2022. The disclosures of the above-listed applications are hereby incorporated by reference herein in their entirety.

BACKGROUND 1. Technical Field

The present disclosure relates to a prefabricated joint toy, and more particularly, to a prefabricated joint toy in which an intermediate ring of a second toy block is inserted between a first coupling ring and a second coupling ring of a first toy block so as to be relatively rotatable therewith, so that the intermediate ring of the second toy block can rotate relatively with respect to the first coupling ring and the second coupling ring of the first toy block and the first coupling ring and the second coupling ring of the first toy block can rotate with respect to the intermediate ring of the second toy block.

2. Description of Related Art

Korean Utility Model Registration No. 20-0472220 (registered on Apr. 4, 2014) discloses a “joint structure of toy.”

The joint structure of a toy includes: a first cylindrical rotating body having an insertion groove formed in the center of one surface to have a magnet inserted thereinto; a first magnet assembly having a first coupling protrusion protruding to one side of the first rotating body and to which an end portion of a first toy component is coupled; a second cylindrical rotating body having an insertion groove formed in the center of one surface to insert a magnet thereinto; and a second magnet assembly having a second coupling protrusion protruding to one side of the second rotating body and to which an end portion of a second toy component is coupled, wherein the first rotating body and the second rotating body are configured to come into contact with each other and to be separated from each other by magnetic force so that the first toy component and the second toy component are selectively attached and detached, and the second rotating body is configured to be rotatable with respect to the first rotating body so that the second toy component can be adjusted in angle with respect to the first toy component.

However, the joint structure of the toy has several disadvantages in that the first rotating body and the second rotating body are separated from each other too easily since the first rotating body and the second rotating body are coupled by the magnets in a case in which the magnetic force of the magnets is weak, and in that the rotation of the second rotating body with respect to the first rotating body is not smooth since the first coupling protrusion of the first rotating body and the second coupling protrusion of the second rotating body are coupled to each other.

SUMMARY

Therefore, an object of the present disclosure is to provide a prefabricated joint toy in which an intermediate ring of a second toy block is inserted between a first coupling ring and a second coupling ring of a first toy block so as to be relatively rotatable, so that the intermediate ring of the second toy block can rotate relatively with respect to the first coupling ring and the second coupling ring of the first toy block and the first coupling ring and the second coupling ring of the first toy block can rotate with respect to the intermediate ring of the second toy block, thereby allowing a user to understand the joint structure (hinge structure and link structure), and improve understanding of geometric sculptures and creativity.

To accomplish the above-mentioned objects, according to an aspect of the present disclosure, there is provided a prefabricated joint toy including: a first toy block including a first coupling ring and a second coupling ring formed at one end of a rod connection portion thereof, a fitting gap provided between the first coupling ring and the second coupling ring, and cut portions respectively formed on the first coupling ring and the second coupling ring; and a second toy block including an intermediate ring portion 123 formed at an end of a rod connection portion thereof, a hole formed in the center of the intermediate ring portion, and ring protrusions respectively formed on the upper and lower sides of the intermediate ring portion to coincide with the hole, wherein the intermediate ring portion of the second toy block is inserted into the fitting gap of the first toy block, so that the intermediate ring portion of the second toy block is arranged between the first coupling ring and the second coupling ring of the first toy block, and wherein the ring protrusions respectively formed on the upper and lower sides of the intermediate ring portion are respectively inserted into the first coupling ring and the second coupling ring of the first toy block, so that the intermediate ring portion of the second toy block is rotated relatively at a predetermined angle with respect to the first coupling ring and the second coupling ring of the first toy block, or the first coupling ring and the second coupling ring of the first toy block are rotated relatively at a predetermined angle with respect to the intermediate ring portion of the second toy block like a hinge.

The rod connection portion is formed in a cylindrical shape, and has a concave portion formed on the outer circumferential surface thereof, so that a user can easily insert or remove a rod by reducing friction.

The prefabricated joint toy further includes a rod connected to the rod connection portion of the first toy block and the rod connection portion of the second toy block, wherein the rod is formed in an octagonal shape having a hollow portion.

The prefabricated joint toy further includes a third toy block having a fitting portion inserted into any one among the first coupling ring and the second coupling ring in a state in which the intermediate ring portion of the second toy block is connected to the first coupling ring and the second coupling ring of the first toy block to be relatively rotatable.

The third toy block includes: a fitting portion formed in a cylindrical shape which is low, an intermediate ring portion formed on one surface of the fitting portion, and a protrusion protruding from the other surface of the fitting portion to be stepped with respect to the fitting portion, a hole formed in the center of the intermediate ring portion, and ring protrusions respectively formed on an upper side and a lower side thereof to coincide with the hole.

In a state in which the fitting portion of the third toy block is connected to the first coupling ring of the first toy block to be relatively rotatable, the first coupling ring and the second coupling ring of another first toy block are coupled to the intermediate ring portion of the third toy block to be relatively rotatable at a predetermined angle.

In addition, the prefabricated joint toy further includes a fourth toy block having a fitting portion which is inserted into any one among the first coupling ring or the second coupling ring of the first toy block in a state in which the intermediate ring portion of the second toy block is coupled to the first coupling ring and the second coupling ring of the first toy block to be relatively rotatable.

The fourth toy block includes: a fitting portion formed in a cylindrical shape which is low, a first coupling ring and a second coupling ring formed on one surface of the fitting portion, a fitting gap formed between the first coupling ring and the second coupling ring, cut portions respectively formed in the first coupling ring and the second coupling ring, and a protrusion protruding from the other surface of the fitting portion to be stepped with respect to the fitting portion.

The first coupling ring and the second coupling ring of the first toy block are fit onto the rod, or the first coupling ring and the second coupling ring of the fourth toy block are fit onto the rod.

In another aspect of the present disclosure, there is provided a prefabricated joint toy, in which an intermediate coupling ring of a fifth toy block is arranged between a first coupling ring and a second coupling ring of a first toy block, the first coupling ring and the second coupling ring of the first toy block and the intermediate coupling ring of the fifth toy block are fit onto rods, so that the first toy block is rotated relatively on the rod at a predetermined angle with respect to the fifth toy block or the fifth toy block is rotated relatively on the rod at a predetermined angle with respect to the first toy block.

The first toy block includes: a rod connection portion, a first coupling ring and a second coupling ring formed at an end of the rod connection portion, a fitting gap formed between the first coupling ring and the second coupling ring, and cut portions respectively formed in the first coupling ring and the second coupling ring.

The fifth toy block includes a rod connection portion, an intermediate ring formed at an end of the rod connection portion, and a cut portion formed in the intermediate coupling ring.

The rod is formed in an octagonal shape having a hollow portion.

The rods are respectively connected to the rod connection portion of the first toy block and the rod connection portion of the fifth toy block, and a coupling ring of a sixth toy block is coupled to the rod.

The sixth toy block includes a coupling ring, a plurality of rod connection portions connected to the coupling ring in such a way that the coupling ring is arranged between the rod connection portions, and a cut portion formed in the coupling ring.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded perspective view illustrating a prefabricated joint toy according to a first embodiment of the present disclosure.

FIG. 2 is a side view illustrating a first toy block and a second toy block of FIG. 1 .

FIG. 3 is a perspective view illustrating an assembled state of the prefabricated joint toy according to the first embodiment of the present disclosure.

FIG. 4 is a cross-sectional view illustrating the prefabricated joint toy according to the first embodiment of the present disclosure.

FIG. 5 is an exploded perspective view illustrating an example in which rods are inserted into a first rod connection portion of a first toy block and a second rod connection portion of a second toy block.

FIG. 6 is an exploded perspective view illustrating that a fitting portion of a third toy block is fitted and coupled to a first coupling ring of the first toy block in the state of FIG. 2 .

FIG. 7 is a perspective view illustrating that the fitting portion of the third toy block is fitted and coupled to a first coupling ring of the first toy block in the state of FIG. 2 .

FIG. 8 is an exploded perspective view illustrating that a fitting portion of a fourth toy block is fitted and coupled to the first coupling ring of the first toy block in the state of FIG. 2 .

FIG. 9 is a perspective view illustrating that the fitting portion of the fourth toy block is fitted and coupled to a first coupling ring of the first toy block in the state of FIG. 2 .

FIG. 10 is a perspective view illustrating an example of an assembled state in in which the first toy block and the fourth toy block are mounted on a rod.

FIG. 11 is an exploded perspective view illustrating a prefabricated joint toy according to a second embodiment of the present disclosure, in which a first coupling ring and a second coupling ring of a first toy block and a middle coupling ring of a fifth toy block are fitted to a rod.

FIG. 12 is a perspective view illustrating an assembled state of the prefabricated joint toy according to the second embodiment of the present disclosure, in which the first coupling ring and the second coupling ring of the first toy block and the middle coupling ring of the fifth toy block are fitted to a rod.

FIG. 13 illustrates an example in which one end of the rod is connected to a rod connection portion of the fifth toy block and a coupling ring of a sixth toy block is coupled to the rod.

FIG. 14 is a perspective view illustrating a modification of a fifth toy block in which three rod connection portions are disposed around a coupling ring.

DETAILED DESCRIPTION

Hereinafter, preferred embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. It should be understood, however, that there is no intent to limit the present disclosure to the specific embodiment forms disclosed, but on the contrary, example embodiments of the invention are to cover all modifications, equivalents, and alternatives falling within the technical idea and scope of the present disclosure. In the attached drawings, similar components have similar reference numerals even though they are illustrated in different figures. Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

In this specification, when a part “includes” or

“comprises” an element, unless there is a particular description contrary thereto, the part can further include other elements, not excluding the other elements. In addition, for convenience of explanation, the same reference numerals will be used for the same components even if the embodiments are different.

Referring to FIGS. 1 to 4 , in a prefabricated joint toy according to a first embodiment of the present disclosure, a first toy block 110 and a second toy block 120 are connected by a joint structure, so that the second toy block 120 may be rotated relatively with respect to the first toy block 110 or the first toy block 110 may be rotated relatively with respect to the second toy block 120.

The first toy block 110 includes a first coupling ring 114 and a second coupling ring 116 formed at one end of a rod connection portion 112, a fitting gap 118 provided between the first coupling ring 114 and the second coupling ring 116, and cut portions 115 and 117 respectively formed in the first coupling ring 114 and the second coupling ring 116.

The rod connection portion 112 is formed in a cylindrical shape, and has a concave portion 113 formed on the outer circumferential surface thereof, so that a user can easily insert or remove a rod 130 (refer to FIG. 5 ) by reducing friction.

The cut portion 115 of the first coupling ring 114 and the cut portion 117 of the second coupling ring 116 are arranged on opposite sides of the position of connection thereof to the rod connection portion 112.

The second toy block 120 includes: an intermediate ring portion 123 formed at one end of a rod connection portion 121; a hole 124 formed in the middle of the intermediate ring portion 123; and ring protrusions 125 respectively formed on an upper side and a lower side of the intermediate ring portion 123 to coincide with the hole 124.

The rod connection portion 121 is formed in a cylindrical shape, and has a concave portion 122 formed on the outer circumferential surface thereof, so that a user can easily insert or remove a rod 140 (refer to FIG. 5 ) by reducing friction.

The inner diameter of the ring protrusion 125 is equal to the diameter of the hole 124 of the intermediate ring portion 123, and the outer diameter is smaller than the diameter of the upper surface of the intermediate ring portion 123.

In the prefabricated joint toy according to the first embodiment of the present disclosure configured as described above, the intermediate ring portion 123 of the second toy block 120 is inserted into the fitting gap 118 of the first toy block 110, and the intermediate ring portion 123 of the second toy block 120 is disposed between the first coupling ring 114 and the second coupling ring 116 of the toy block 110. In this instance, the ring protrusions 125 formed on the upper and lower sides of the intermediate ring portion 123 are respectively inserted into the first coupling ring 114 and the second coupling ring 116 of the first toy block 110, so that the intermediate ring portion 123 of the second toy block 120 with respect to the first coupling ring 114 and the second coupling ring 116 of the first toy block 110 is rotated relatively at a predetermined angle like a hinge as indicated by an arrow 126 of FIG. 3 , or the first coupling ring 114 of the first toy block 110 and the second coupling ring 116 of the first toy block 110 with respect to the intermediate ring portion 123 of the second toy block 120 are rotated relatively at a predetermined angle.

Furthermore, the ring protrusions 125 formed on the upper and lower sides of the intermediate ring portion 123 are respectively inserted into the first coupling ring 114 and the second coupling ring 116, so that the intermediate ring portion 123 of the second toy block 120 can relatively smoothly rotate with respect to the first coupling ring 114 and the second coupling ring 116 of the second toy block 120, but the intermediate ring portion 123 of the second toy block 120 is not automatically separated from the first coupling ring 114 and the second coupling ring 116 of the first toy block 110.

In addition, in a state in which the intermediate ring portion 123 is coupled to the first coupling ring 114 and the second coupling ring 116 to be rotatable, when the intermediate ring portion 123 is forcedly pulled in a direction of an arrow 127 of FIG. 3 , the cut portion 115 of the first coupling ring 114 and the cut portion 117 of the second coupling ring 116 are widened, so that the intermediate ring portion 123 of the second toy block 120 is easily separated from the first coupling ring 114 and the second coupling ring 116 of the first toy block 110.

As described above, the present disclosure provides a prefabricated toy block for learning or playing, in which the second toy block 120 is rotated relatively at a predetermined angle with respect to the first toy block 110 or the first toy block 110 is rotated relatively at a predetermined angle with respect to the second toy block 120, thereby allowing a user to understand the joint structure (hinge structure and link structure), and improve the understanding of geometric sculptures and creativity. Referring to FIG. 5 , the prefabricated joint toy according to the first embodiment of the present disclosure further includes rods 130 which are respectively connected to the first rod connection portion 112 of the first toy block 110 and the second rod connection portion 121 of the second toy block 120.

The rods 130 are formed in an octagonal prism shape having a hollow portion.

As illustrated in FIG. 5 , one end of one 130 of the rods is inserted and connected into the rod connection portion 112 of the first toy block 110, and one end of the other rod 130 is connected to the rod connection portion 121 of the second toy block 120, so that the rods 130 serve as a frame in the structure in which the first toy block 110 and the second toy block 120 are coupled to each other. In addition, since the rods 130 are formed in the octagonal shape, the rod connection portion 112 of the first toy block 110 and the rod connection portion 121 of the second toy block 120 can be prevented from running idle and other toy blocks mounted on the rods 130 can be prevented from running idle.

Referring to FIGS. 6 and 7 , the prefabricated joint toy according to the first embodiment of the present disclosure further includes a third toy block 140, which has a fitting portion 141 inserted into any one among the first coupling ring 114 and the second coupling ring 116 in the state in which the intermediate ring portion 123 of the second toy block 120 is rotated relatively with respect to the first coupling ring 114 and the second coupling ring 116 of the first toy block 110.

FIGS. 6 and 7 illustrate an example in which the fitting portion 141 of the third toy block 140 is inserted into the first coupling ring 114 of the first toy block 110.

The third toy block 140 includes: the fitting portion 141 formed in a cylindrical shape which is low; an intermediate ring portion 143 formed on one surface of the fitting portion 141; and a protrusion 142 protruding from the other surface of the fitting portion 141, so that the protrusion 142 is formed to be stepped with respect to the fitting portion 141.

The intermediate ring portion 143 is formed in the same shape as the intermediate ring portion 123 of the second toy block 120. That is, the intermediate ring portion 143 has a hole 144 formed at the center, and ring protrusions 145 respectively formed on an upper side and a lower side thereof to coincide with the hole 144.

The inner diameter of the ring protrusion 145 is equal to the diameter of the hole 144, and the outer diameter is smaller than the diameter of the upper surface.

As a result, as illustrated in FIG. 6 , in a case in which the fitting portion 141 of the third toy block 140 is inserted into the first coupling ring 114 of the first toy block 110, the protrusion 142 is inserted into the hole 124 of the intermediate ring portion 123 of the second toy block 120. Accordingly, the third toy block 140 is vertically connected to the first toy block 110 as illustrated in FIG. 7 , so the third toy block 140 can rotate relatively at a predetermined angle with respect to the first toy block 110 as indicated by an arrow 147 in FIG. 7 .

In addition, in a state in which the fitting portion 141 of the third toy block 140 is connected to the first coupling ring 114 of the first toy block 110 to be relatively rotatable, the first coupling ring 114 and the second coupling ring 116 of another first toy block 110 are coupled to the intermediate ring portion 143 of the third toy block 140 to be relatively rotatable.

Therefore, the present invention can improve creativity by allowing a user to expand thinking about a joining connection structure.

Referring to FIGS. 8 and 9 , as an alternative, the prefabricated joint toy according to the first embodiment of the present disclosure further includes a fourth toy block 150 having a fitting portion 151 inserted into any one among the first coupling ring 114 and the second coupling ring 116 in a state in which the intermediate ring portion 123 of the second toy block 120 is coupled to the first coupling ring 114 and the second coupling ring 116 of the first toy block 110 to be relatively rotatable.

The fourth toy block 150 includes: the fitting portion 151 having a cylindrical shape which is low; a first coupling ring 152 and a second coupling ring 153 formed on one surface of the fitting portion 151; a fitting gap 154 formed between the first coupling ring 152 and the second coupling ring 153; cut portions 155 and 156 respectively formed on the first coupling ring 152 and the second coupling ring 153; and a protrusion 158 protruding from the other surface of the fitting portion 151 to be stepped with respect to the fitting portion 151.

As illustrated in FIG. 8 , in a case in which the fitting portion 151 of the fourth toy block 150 is inserted into the first coupling ring 114 of the first toy block 110, the protruding 158 is inserted into the hole 124 of the intermediate ring portion 123 of the second toy block 120. Accordingly, in a state in which the fourth toy block 150 is vertically connected to the first toy block 110 as illustrated in FIG. 9 . In this state, the fourth toy block 150 can rotate relatively at a predetermined angle with respect to the first toy block 110 as indicated by the arrow 157 in FIG. 9 .

In addition, the intermediate ring portion 123 of another second toy block 120 is inserted into the fitting gap 154 of the fourth toy block 150, so that the intermediate ring portion 123 is connected to the first coupling ring 152 and the second coupling ring 153 to be rotatable.

Referring to FIG. 10 , in the prefabricated joint toy according to the first embodiment of the present disclosure, in a state in which the intermediate ring portion 123 of the second toy block 120 is connected to the first coupling ring 114 and the second coupling ring 116 of the first toy block 110 and the rods 130 are respectively inserted into the first rod connection portion 112 of the first toy block 110 and the second rod connection portion 121 of the second toy block 120, the first coupling ring 114 and the second coupling ring 116 of the first toy block 110 may be fit onto the rod 130 or the first coupling ring 152 and the second coupling ring 153 of the fourth toy block 150 may be fit onto the rod 130.

Referring to FIGS. 11 and 12 , in a prefabricated joint toy according to a second embodiment of the present disclosure, an intermediate coupling ring 163 of a fifth toy block 160 is provided between a first coupling ring 114 and a second coupling ring 116 of a first toy block 110, the first coupling ring 114 and the second coupling ring 116 of the first toy block 110 and the intermediate coupling ring 163 of the fifth toy block 160 are fit onto a rod 130. Accordingly, the first toy block 110 may be rotated relatively on the rod 130 at a predetermined angle with respect to the fifth toy block 160, or the fifth toy block 160 may be rotated relatively on the rod 130 at a predetermined angle with respect to the first toy block 110.

As described above, the first toy block 110 includes the first coupling ring 114 and the second coupling ring 116 formed at an end of a rod connection portion 112, a fitting gap 118 provided between the first coupling ring 114 and the second coupling ring 116, and cut portions 115 and 117 respectively formed on the first coupling ring 114 and the second coupling ring 116.

The rod connection portion 112 is formed in a cylindrical shape, and has a concave portion 113 formed on the outer circumferential surface thereof, so that a user can easily insert or remove a rod 130 (refer to FIG. 12 ) by reducing friction.

The cut portion 115 of the first coupling ring 114 and the cut portion 117 of the second coupling ring 116 are arranged on opposite sides of where they are connected to the rod connection portion 112.

The fifth toy block 160 includes an intermediate coupling ring 163 formed at an end of the rod connection portion 161, and a cut portion 164 formed on the intermediate coupling ring 163.

The rod connection portion 161 is formed in a cylindrical shape, and has a concave portion 162 formed on the outer circumferential surface thereof, so that a user can easily insert or remove a rod 130 (refer to FIG. 13 ) by reducing friction.

The cut portion 164 is arranged on opposite sides of where they are connected to the rod connection portion 161.

The rod 130 is formed in an octagonal shape having a hollow portion.

In a case of the prefabricated joint toy according to the second embodiment of the present disclosure, the intermediate coupling ring 163 of the fifth toy block 160 is inserted into the fitting gap 118 of the first toy block 110, so that the intermediate coupling ring 163 of the fifth toy block 160 is arranged between the first coupling ring 114 and the second coupling ring 116 of the first toy block 110, and the rod 130 is fit while passing through the first coupling ring 114, the intermediate coupling ring 163, and the second coupling ring 115 in order.

Accordingly, as indicated by an arrow 167 of FIG. 12 , the first toy block 110 may be rotated relatively on the rod 130 at a predetermined angle with respect to the fifth toy block 160, or the fifth toy block 160 may be rotated relatively on the rod 130 at a predetermined angle with respect to the first toy block 110.

As described above, the prefabricated joint toy according to the second embodiment of the present disclosure provides a prefabricated toy block for learning or playing, in which the fifth toy block 160 is rotated relatively on the rod 130 at a predetermined angle with respect to the first toy block 110 or the first toy block 110 is rotated relatively on the rod 130 at a predetermined angle with respect to the fifth toy block 160, thereby allowing a user to understand the joint structure (hinge structure and link structure), and improving the understanding of geometric sculptures and creativity.

Referring to FIG. 13 , in the prefabricated joint toy according to the second embodiment of the present disclosure, the rods 130 may be respectively connected to the rod connection portion 112 of the first toy block 110 and the rod connection portion 161 of the fifth toy block 160, and a coupling ring 171 of the sixth toy block 170 may be coupled to the rod 130.

The sixth toy block 170 includes a plurality of rod connection portions 172 connected to the coupling ring 171, the coupling ring 171 arranged between the rod connection portions 172, and a cut portion 173 formed on the coupling ring 171.

In FIG. 13 , two rod connection portions 172 are arranged to face each other in a state in which the coupling ring 171 is interposed therebetween. In FIG. 14 , three rod connection portions 172 are arranged on the circumference of the coupling ring 171 at regular intervals.

Accordingly, by the method of connecting the rod to the rod connection portion of the sixth toy block 170, the user can expand the thought of the joint connection structure. While the present disclosure have been described with reference to particular details such as specific elements, the embodiments, and the drawings as described above, this is provided only to help the overall understanding of the present disclosure and the present disclosure is not limited to the embodiments. It will be understood by those skilled in the art to which the present disclosure belongs that various modifications and changes may be made from the description.

Therefore, the spirit of the present disclosure is not determined by being limited to the above-described embodiments, but the claims described later and all of those that are equivalent to the claims and equivalent modifications thereof belong to the spirit and scope of the present disclosure.

The prefabricated joint toy according to the present disclosure is used for learning or playing, and allows a user to understand the joint structure (hinge structure and link structure), and improve the understanding of geometric sculptures and creativity. 

What is claimed is:
 1. A prefabricated joint toy comprising: a first toy block including a first coupling ring and a second coupling ring formed at one end of a rod connection portion thereof, a fitting gap provided between the first coupling ring and the second coupling ring, and cut portions respectively formed on the first coupling ring and the second coupling ring; and a second toy block including an intermediate ring portion 123 formed at an end of a rod connection portion thereof, a hole formed in the center of the intermediate ring portion, and ring protrusions respectively formed on the upper and lower sides of the intermediate ring portion to coincide with the hole, wherein the intermediate ring portion of the second toy block is inserted into the fitting gap of the first toy block, so that the intermediate ring portion of the second toy block is arranged between the first coupling ring and the second coupling ring of the first toy block, and wherein the ring protrusions respectively formed on the upper and lower sides of the intermediate ring portion are respectively inserted into the first coupling ring and the second coupling ring of the first toy block, so that the intermediate ring portion of the second toy block is rotated relatively at a predetermined angle with respect to the first coupling ring and the second coupling ring of the first toy block, or the first coupling ring and the second coupling ring of the first toy block are rotated relatively at a predetermined angle with respect to the intermediate ring portion of the second toy block like a hinge.
 2. The prefabricated joint toy according to claim 1, wherein the rod connection portion is formed in a cylindrical shape, and has a concave portion formed on the outer circumferential surface thereof, so that a user can easily insert or remove a rod by reducing friction.
 3. The prefabricated joint toy according to claim 1, further comprising: a rod connected to the rod connection portion of the first toy block and the rod connection portion of the second toy block, wherein the rod is formed in an octagonal shape having a hollow portion.
 4. The prefabricated joint toy according to claim 1, further comprising: a third toy block having a fitting portion inserted into any one among the first coupling ring and the second coupling ring in a state in which the intermediate ring portion of the second toy block is connected to the first coupling ring and the second coupling ring of the first toy block to be relatively rotatable.
 5. The prefabricated joint toy according to claim 4, wherein the third toy block includes: a fitting portion formed in a cylindrical shape which is low, an intermediate ring portion formed on one surface of the fitting portion, and a protrusion protruding from the other surface of the fitting portion to be stepped with respect to the fitting portion, a hole formed in the center of the intermediate ring portion, and ring protrusions respectively formed on an upper side and a lower side thereof to coincide with the hole.
 6. The prefabricated joint toy according to claim 5, wherein in a state in which the fitting portion of the third toy block is connected to the first coupling ring of the first toy block to be relatively rotatable, the first coupling ring and the second coupling ring of another first toy block are coupled to the intermediate ring portion of the third toy block to be relatively rotatable at a predetermined angle.
 7. The prefabricated joint toy according to claim 1, further comprising: a fourth toy block having a fitting portion which is inserted into any one among the first coupling ring or the second coupling ring of the first toy block in a state in which the intermediate ring portion of the second toy block is coupled to the first coupling ring and the second coupling ring of the first toy block to be relatively rotatable.
 8. The prefabricated joint toy according to claim 7, wherein the fourth toy block includes: a fitting portion formed in a cylindrical shape which is low, a first coupling ring and a second coupling ring formed on one surface of the fitting portion, a fitting gap formed between the first coupling ring and the second coupling ring, cut portions respectively formed in the first coupling ring and the second coupling ring, and a protrusion protruding from the other surface of the fitting portion to be stepped with respect to the fitting portion.
 9. The prefabricated joint toy according to claim 3, wherein the first coupling ring and the second coupling ring of the first toy block are fit onto the rod, or the first coupling ring and the second coupling ring of the fourth toy block are fit onto the rod.
 10. A prefabricated joint toy, wherein an intermediate coupling ring of a fifth toy block is arranged between a first coupling ring and a second coupling ring of a first toy block, the first coupling ring and the second coupling ring of the first toy block and the intermediate coupling ring of the fifth toy block are fit onto rods, so that the first toy block is rotated relatively on the rod at a predetermined angle with respect to the fifth toy block or the fifth toy block is rotated relatively on the rod at a predetermined angle with respect to the first toy block.
 11. The prefabricated joint toy according to claim 10, wherein the first toy block includes: a rod connection portion, a first coupling ring and a second coupling ring formed at an end of the rod connection portion, a fitting gap formed between the first coupling ring and the second coupling ring, and cut portions respectively formed in the first coupling ring and the second coupling ring, wherein the fifth toy block includes a rod connection portion, an intermediate ring formed at an end of the rod connection portion, and a cut portion formed in the intermediate coupling ring, and wherein the rod is formed in an octagonal shape having a hollow portion.
 12. The prefabricated joint toy according to claim 11, wherein the rods are respectively connected to the rod connection portion of the first toy block and the rod connection portion of the fifth toy block, and a coupling ring of a sixth toy block is coupled to the rod.
 13. The prefabricated joint toy according to claim 12, wherein the sixth toy block includes a coupling ring, a plurality of rod connection portions connected to the coupling ring in such a way that the coupling ring is arranged between the rod connection portions, and a cut portion formed in the coupling ring. 